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参数资料
| 型号： | PTH08T261WAZT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIAT PACKAGE-10 |
| 文件页数： | 37/38页 |
| 文件大小： | 1206K |
| 代理商： | PTH08T261WAZT |
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SLTS272F
– DECEMBER 2006 – REVISED APRIL 2011
ELECTRICAL CHARACTERISTICS (continued)
TA =25°C, VI = 5 V, VO = 3.3 V, CI = 330 F, CO1 = 200 F ceramic, and IO = IO max (unless otherwise stated)
PARAMETER
TEST CONDITIONS
PTH08T261W
MIN
TYP
MAX
UNIT
CI
External input capacitance
300 (7)
F
without
Capacitance value
Ceramic
200 (8)
5000
F
TurboTrans
CO
External output capacitance
see table
Capacitance value
Ceramic
5000 (10)
μF
with
(9)
Turbotrans
Capacitance
× ESR product (CO × ESR)
100
1000
μF×m
Per Telcordia SR-332, 50% stress,
MTBF
Reliability
6.7
106 Hr
TA = 40°C, ground benign
(7)
300
F of ceramic or 330 F of electrolytic input capacitance is required for proper operation. Electrolytic capacitance must be rated for
a minimum of 450 mA rms of ripple current. An additional 22-
μF ceramic input capacitor is recommended to reduce rms ripple current.
When operating at VI > 8V, the minimum required CI may be reduced to 200 F of ceramic or a 220-μF electrolytic plus a 22-μF
ceramic.
(8)
200
F ceramic external output capacitance is required for basic operation. The required ceramic output capacitance can be made up of
2
× 100 F or 4 × 47 F. The minimum output capacitance requirement increases when TurboTrans (TT) technology is used. See the
Application Information for more guidance.
(9)
When using TurboTrans
technology, a minimum value of output capacitance is required for proper operation. Additionally, low ESR
capacitors are required for proper operation. See the TurboTrans application notes for further guidance.
(10) This is the calaculated maximum when using the TurboTrans feature. Additionally, low ESR capacitors are required for proper operation.
See the TurboTrans application notes for further guidance.
8
Copyright
2006–2011, Texas Instruments Incorporated
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